Home
Class 11
PHYSICS
A man is crossing a river flowing with v...

A man is crossing a river flowing with velocity of `5m//s`. He reaches a point directly across at a distance of 60m in 5 sec. His velocity in still water should be

A

`12m//s`

B

`13m//s`

C

`5m//s`

D

`10m//s`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • KINEMATICS 1

    DC PANDEY ENGLISH|Exercise MCQ_TYPE|27 Videos
  • KINEMATICS 1

    DC PANDEY ENGLISH|Exercise COMPREHENSION_TYPE|19 Videos
  • KINEMATICS

    DC PANDEY ENGLISH|Exercise INTEGER_TYPE|10 Videos
  • LAWS OF MOTION

    DC PANDEY ENGLISH|Exercise Medical entrances gallery|39 Videos

Similar Questions

Explore conceptually related problems

A man is crossing a river flowing with velocity of 5m//s . He reaches a point directly across at a distance of 60m in 5sec. his velocity in still water should be

A river of width 80m is flowing at 6 m/s. A motorboat crosses the river in 10s and reaches a point directly across on the other river bank. The velocity of motorboat in still water is :

A ,man wishing to cross a river flowing with velocity u jumps at an angle theta with the river flow. (a) Find the net velocity of the man with respect to ground if he can swim with speed v in still water. (b) In what direction does the boat actually move ? ( c) Find how far from the point directly opposite to the starting point does the boat reach the opposite bank, if the width of the river is d .

A man wishes to cross a river of width 120 m by a motorboat. His rowing speed in still water is 3 m//s and his maximum walking speed is 1m//s . The river flows with velocity of 4 m//s . (a) Find the path which he should take to get to the point directly opposite to his starting point in the shortest time. (b) Also, find the time which he takes to reach his destination.

A man wishes to swim across a river 40 m wide flowing with a speed of 3m/s. such that he reaches the point just infront on the other bank in time not greater than 10s. The angle made by the direction he swims and river flow direction is :-

Velocity of boat in still water is 13 m/s. If water flows ina river with a velocity of 5 m/s. What is the difference in times taken by him to cross the river in the shortest path and in the shortest time. If the width of the river is 10 m.

A man can swim in still water ast a speed of 3 km/h. He wants to cross a river that flows at 2 km/h and reach the point directly oposite to his starting point. A. In which diretionshoeld he try to swim (that is, find the angle his body makes wilth the river flow)? b. How much time will he take to cross the river if the river is 500 m wide?

The velocity of a boat in still water is 10 m/s. If water flows in the river with a velocity of 6 m/s what is the difference in times taken to cross the river in the shortest path and the shortest time. The width of the river is 80 m.

A river is flowing with a velocity of 2m/s. If the width of river in 100 m and swimmer wants to cross river is shortest time, what time (in sec) would he take if velocity of swimmer in still water is 4 m/s ?

A swimmer wishes to reach directly opposite bank of a river, flowing with velocity 8 m/s. The swimmer can swim 10 m/s still water. The width of the river is 480 m. Time taken by him to do so:

DC PANDEY ENGLISH-KINEMATICS 1-INTEGER_TYPE
  1. A man is crossing a river flowing with velocity of 5m//s. He reaches a...

    Text Solution

    |

  2. A stone is dropped from a certain height which can reach the ground in...

    Text Solution

    |

  3. A car starts moving along a line, first with acceleration a=5m//s^(2) ...

    Text Solution

    |

  4. Two particles P and Q simultaneously start moving from point A with ve...

    Text Solution

    |

  5. If a particle takes t second less and acquire a velocity of vms^(-1) m...

    Text Solution

    |

  6. Speed time graph of two cars A and B approaching towards each other is...

    Text Solution

    |

  7. The acceleration-time graph of a particle moving along a straight line...

    Text Solution

    |

  8. A lift performs the first part of its ascent with uniform acceleration...

    Text Solution

    |

  9. A small electric car has a maximum constant acceleration of 1m//s^(2),...

    Text Solution

    |

  10. The diagram shows the variatioin of 1//v (where v is velocity of the p...

    Text Solution

    |

  11. Two particles are moving with velocities v(1)=hati-thatj+hatk and v(2)...

    Text Solution

    |

  12. A particle A moves with velocity (2hati-3hatj)m//s from a point (4,5m)...

    Text Solution

    |

  13. A ball is thrown upwards with a speed of 40m//s. When the speed become...

    Text Solution

    |

  14. Figure shows the velocity time graph for a particle travelling along a...

    Text Solution

    |

  15. Two bodies A and B are moving along y-axis and x -axis as shown. Find ...

    Text Solution

    |

  16. The 1//v versus positions graph of a particle is shown in the figure, ...

    Text Solution

    |